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Finding the Fourth Proportional to 250,644.12, 345,886.38 and 137,468.76

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Solution

The fourth proportional to 250,644.12, 345,886.38 and 137,468.76 is: 189,705.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,644.12 : 345,886.38 = 137,468.76 : x
  2. Step 2: Convert to fraction form
    250,644.12/345,886.38 = 137,468.76/x
  3. Step 3: Cross multiply
    250,644.12x = 345,886.38 × 137,468.76
  4. Step 4: Simplify right side
    250,644.12x = 47,548,571,759.49
  5. Step 5: Solve for x
    x = 47,548,571,759.49/250,644.12
  6. Step 6: Final answer
    x = 189,705.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.